1/16+2/16+3/16+……+14/16+15/16+14/16+13/16+……+2/16+1/16求简算及解释

1/16+2/16+3/16+……+14/16+15/16+14/16+13/16+……+2/16+1/16=1/16(1+2+3+……+14+15+14+13+……+2+1)=1/16(15×8+15×7)=1/16×225=225/161+2+3+……+13+14+15首尾相加,7个16外加1个8,一共15个814+13+……+2+1首尾...